Magento Site Payment Gateway Integration

IOnePay Payment Gateway Integration We would like to integrate our payment gateway (IOnePay) to a Magento Online Mall we just built. IOnePay is similar to PayPal. It was built on .Net MVC platform. We have API for integration and have sample PHP code (please see attached). The integration should address each store, where each store is considered a merchant. In processing payments the parameters for the store (Merchant ID, merchant code) should be passed for processing. This is to ensure that we know what store a payment is for. IOnePay developers are available to assist with any questions during integration. We also have the developers that built the magento site willing to help. When Customer pays it can be redirect to payment page, but when payment is finished, the page will be redirected back to the website. Provide relevant fields, and help with integrate API to the website / application After payment clear, the payment information store into saved into database. Attached zip file contains: 1. [login to view URL] - For JSON 2. [login to view URL] - Library for XML parsing 3. [login to view URL] - For XML Attached document contains API information. This is an urgent project that we would like to complete in next 3 - 4 days.